Set « Collections « Java Tutorial

9.18.1.Convert a List to a Set
9.18.2.Convert an ArrayList to HashSet
9.18.3.Creating a Sorted Set
9.18.4.Create new sets from Iterable, var argv
9.18.5.Create an array containing the elements in a set
9.18.6.Comparable with a sorted collection.
9.18.7.Duplicate elements are discarded
9.18.8.Creating a Set That Retains Order-of-Insertion
9.18.9.Convert Set into array

9.18.10.Convert Set into List
9.18.11.Copy all the elements from set2 to set1 (set1 += set2), set1 becomes the union of set1 and set2
9.18.12.Remove all the elements in set1 from set2 (set1 -= set2), set1 becomes the asymmetric difference of set1 and set2
9.18.13.Get the intersection of set1 and set2, set1 becomes the intersection of set1 and set2
9.18.14.Set operations: union, intersection, difference, symmetric difference, is subset, is superset
9.18.15.Remove all elements from a set
9.18.16.List Set
9.18.17.Set implementation that use == instead of equals()
9.18.18.Set union and intersection
9.18.19.Set with values iterated in insertion order.

9.18.20.Implements the Set interface, backed by a ConcurrentHashMap instance
9.18.21.A weak HashSet: element stored in the WeakHashSet might be garbage collected
9.18.22.An IdentitySet that uses reference-equality instead of object-equality
9.18.23.A thin wrapper around a List transforming it into a modifiable Set.
9.18.24.Concurrent set
9.18.25.Set that compares object by identity rather than equality